Home / 1,311,211.65-1,966,817.48-913,080.45

Finding the Fourth Proportional to 1,311,211.65, 1,966,817.48 and 913,080.45

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Solution

The fourth proportional to 1,311,211.65, 1,966,817.48 and 913,080.45 is: 1,369,620.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,211.65 : 1,966,817.48 = 913,080.45 : x
  2. Step 2: Convert to fraction form
    1,311,211.65/1,966,817.48 = 913,080.45/x
  3. Step 3: Cross multiply
    1,311,211.65x = 1,966,817.48 × 913,080.45
  4. Step 4: Simplify right side
    1,311,211.65x = 1,795,862,585,140.86
  5. Step 5: Solve for x
    x = 1,795,862,585,140.86/1,311,211.65
  6. Step 6: Final answer
    x = 1,369,620.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.